Use of Collagen Fiber Adsorbent for the Purification of Tea Polyphenols

doi:10.7506/spkx1002-6630-200914021

FOOD SCIENCE ›› 2009, Vol. 30 ›› Issue (14 ): 127-131.doi: 10.7506/spkx1002-6630-200914021

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Use of Collagen Fiber Adsorbent for the Purification of Tea Polyphenols

LU Fen，LU Yuan-ping*

College of Light Industry and Textile and Food Engineering, Sichuan University, Chengdu 610065, China

Received:2008-09-28 Online:2009-07-15 Published:2010-12-29
Contact: LU Yuan-ping* E-mail:lvyuanping@yahoo.cn

Abstract

Abstract:

Collagen fiber adsorbent can adsorb tea polyphenol monomers to various degrees but its molecule has no groups that can be bound with caffeine. So, based on this principle tea polyphenols can be purified using collagen fiber adsorbent. The adsorption properties of collagen fiber adsorbent for the purification of tea polyphenols were investigated. The results indicated that the adsorbent had strong adsorption selectivity, high adsorption capacity (850 mg/g) and good desorption efficiency. After being eluted using 50% ethanol aqueous solution, the yield of tea polyphenols was 85.46%, and the purity was over 99%. The adsorption isotherms of tea polyphenols could be well described by the Freundlich equation; and the adsorption kinetics data were well fitted to pseudo-second-order rate model.

Key words: tea polyphenols, collagen fibers, adsorption, purification

CLC Number:

O647.3

LU Fen，LU Yuan-ping*. Use of Collagen Fiber Adsorbent for the Purification of Tea Polyphenols[J]. FOOD SCIENCE, 2009, 30(14 ): 127-131.

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Use of Collagen Fiber Adsorbent for the Purification of Tea Polyphenols

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